For forms on a webpage, what do you reckon is the best way to prevent spam?
I've considered implementing a visual CAPTCHA. However, this does not bode well for accessibility - it tends to discriminate against those with visual impairments, or those that might otherwise have difficulties with the image.
A simple Maths question could work, such as just adding two random small numbers together, but this again could pose problems to a small minority of users. Also, are there any spambots that can get around this? I would imagine it is not too difficult to program your way past such an obstacle.
Any ideas are greatly appreciated.
Mike.


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